TY - JOUR AU - Austin, P C TI - Balance diagnostics for comparing the distribution of baseline covariates between treatment groups in propensity-score matched samples JO - Stat Med VL - 28 PY - 2009 DO - 10.1002/sim.3697 L3 - PubMed-ID: 19757444 SP - 3083 EP - 3107 ER -